Creasing machine



A fil 21, 1925.

L. W. SHIELDS CREASING MACHINE Filed Oct. 19. 1923 2 Sheets-Sheet 1 M 1%w J w 1% ATTORNEYS.

Patented Apr. 21, 1925.

UNITED STATES PATENT OFFICE.

LOWELL W. SHIELDS, OF ROCHESTER, NEW YGRK, ASSIGNOR TO HICKOK MANUFAC-TURING COMPANY, INC, OF ROCHESTER, NEW YORK, A CORPORATION OF NEW YORK.

cnnnsrne MACHINE.

, creasing loops, such as used in belts, straps,-

harness or the like. Another object of this invention is to provide amachine in Which the creasing operations are so simplified that theexpense of creasing loops is reduced to a minimum. A further object ofthe invention is to provide a. simple and inexpensive means of feedingloops to and from a creasing mechanism.. Still another object of theinvention is to provide a. creasing mechanism which willfornrsimultaneously creases in the four corners of a loop.

To these and other ends, the invention consists of certain parts andcombinations of parts, all of which will be hereinafter described: thenovel features being pointed out in the appended claims.

In the drawings:

Fig. 1 is a side viewof a creasing machine constructed in accordancewith this invention, parts of the standard of the machine being brokenaway; a

Fig. 2 is a front view of the machine;

Fig. 3 is a view showing the top cover plate of the creasing mechanismremoved and the shaping die in horizontal section; Fig. 4 is a sectionon the line 4-t, Fig. 3;

Fig. 5 is a section on the line 5&5, Fig. 3; and I Fig. 6 is aperspective vie-w of the shaping die and feeding or guide bar leadingthereto.

In the illustrated embodiment of the invention, there is provided ahollow standard 1 having a plate 2 bolted to the upper end thereof at3'. This plate has a casting 4 bolted thereto at 5," the top of suchcasting having a central opening 6,"an'd having arranged beneath it adischarge conduit or chute 7 for the creased loops 8, this chuteextending downwardly in the standard and laterally at 9 through one sideof the'standard asillustrated in Fig. 1. The-top of the gly therefromcasting iserves as a bed plate for the creasing mechanism and hasextending upwardand integrally therewith segmental pieces 10 spacedapart so as to provide guideways between them, the guideways thus formedbeing radial to the opening 6. On these guideways pressure or creasingdevices 11 and 12 operate, the creasing devices 11 being two in numberand being duplicates of each other and the creasing devices 12 alsobeing two in number and being duplicates of each other, but being, inthis instance, different in form from the creasing devices 11. Each ofthe creasing devices is mounted on a rod 13 which has a head 14,limiting the movement of the creasing devices on the rod in onedirection. The rod is rigidly secured to a block 15 and is surrounded bya helical spring 17 arranged between the block and the creasing head, sothat the creasing head or device is resiliently connected with theblock. Both the block and the head are guided at their sides byengagement with the sides of the quadrantal projections 10. Each block15 preferably also carries an anti-friction roller 18 for engagement bya cam surface 19 on the inner periphery of an operating ring 20, theoperating ring having, in this in stance, worm wheel teeth 21 forengagement with the worm 22. The worm 22 is driven in any suitablemanner as by a sprocket 23 on the worm shaft connected by a sprocketchain 2-1 with the shaft of a motor 25. 7

It is apparent that the turning of the operating ring through the worm22 causes the cams 19 to cooperate withthe rollers 18 on the blocks 15and move said blocks with the pressure or creasing devices radiallyinward to cooperate with one of the loops 18 supported on a shaping dieto be hereinafter more particularly described. A spring 26 anchored at27 to the pins on the bed 4: and

at 28 to pins on opposite sides of the creasing or pressure devices 11and 12 tend to move said devices with the heads 15 outwardly. Thesprings 17 permit said pressure or creasing devices to adapt themselvesto loops of different thicknesses.

The shaping die hereinbefore mentioned is in the form of a head 29formed with two wide sides and two narrow sides, both the narrow sidesand the wide sides being concaved at 30 so that sharp corners 31 areprovided on the die. The pressure or creasing devices are also curvedsothat the sides and ends of a loop are pressed inwardly on the shapingdie, thus creating sharp corners in the loop and providing a loop whichis substantially permanent in its formation.

The die is preferably suspended from a point above the creasingmechanism, so that the loops may be passed or forced downwardly from theshaping die into the chute 7. In this instance, the die is suspended bya guide bar 32 which has its upper end formed with a bayonet slot 33engaged over a headed pin 34 formed on the end of a bracket 35projecting upwardly from a top plate 36 which covers the creasingmechanism and has a central opening 37 through which the shaping die mayextend.

In the operation of the invention the loops are fitted upon a guide baror strap 32 with a shaping die 29 at one end thereof and are thensuspended from the headed projection at the end of the bracket 35 sothat the shaping die lies within the field of operation of the creasingmechanism. Thereafter the creasing mechanism is started in operation andthe pressure or creasin devices move toward one of the loops on the die,pressing the sides and ends of the loop inwardly, so

as to form sharp corners at the corners of the shaping die. After a loophas been creased another loop is moved to creasing position, displacingthe creased loop which moves downwardly on the shaping die and displacesone of the creased loops below it into the chute 7 This is continueduntil all of the loops on the guide bar have been creased when anotherguide bar and shaping die is introduced into the machine.

F rom the foregoing it will be seen that there has been provided acreasing machine especially adapted for creasing loops in con- 'nectionwith belts, straps, harness, or the like. Loops are creased on a shapingdie which is suspended in such a manner that after the creasingoperation they may be discharged readily downward from the die. Thesuspending means is in the form of a bar or guide on which the shapingdie is mounted, this guide or bar directing the loop therefrom onto theshaping die. Creasing or pressure devices are preferably yieldinglymounted and cooperate with the sides and ends of the loops to force theminto concave faces on the die and form sharp corners in the loops. Inthis instance, the creasing devices are moved radially and operatedthrough a cam ring which has worm wheel teeth engaged by a suitablydriven worm.

W hat I claim as my invention and desire to secure by Letters Patent is:

1. A loop creasing machine comprising a guide about which the loopextends and a shaping die rigidly connected to the guide so that theloops to be shaped can move from the guide to and about the die, andmovable creasing devices operating upon the loops on the shaping die.

2. A loop creasing machine comprising a suspended guide bar about whichthe loops extend, a shaping die rigidly arranged at the lower end of theguide bar and onto and about which the loops are fed from the guide bar,and creasing means operating upon the loops on the shaping die.

3. In a loop creasing machine, a guide bar about which the loops extendhaving a shaping die at one end thereof to receive about it the loopsfrom the guide bar.

4. In a loop creasing machine, a guide bar about which the loops extendhaving a shaping die at one end thereof to receive the loops from theguide bar combined with means for detachably suspending said guide barfrom its upper end, and creasing means operating upon the loops on theshaping die.

5. A creasing machine comprising a suspended guide bar, a shaping diearranged at the lower end of the guide bar to receive articles from thelatter, means operating upon the articles on the shaping die to creasethe articles, and a chute arranged below said shaping die to receivesuch articles from the die.

(3. A creasing machine comprising a suspended shaping die, and creasingdevices arranged about said die to operate upon an article thereon, saidcreasing devices being yieldingly mounted.

7. A creasing machine comprising a suspended shaping die, and creasingdevices arranged about said die to operate upon an article thereon andradially movable.

8. A creasing machine comprising a suspended shaping die, a plurality ofcreasing devices arranged about the die and movable to operate upon thearticles to be shaped on the die, and a cam ring for operating saidcreasing devices.

9. A creasing machine comprising a shaping die, a bed having an openingover which said shaping die is suspended, creasing devices radiallymovable on the bed to cooperate with said shaping die, roller carryingblocks yieldingly connected with the creasing devices, and a cam ringmounted on the bed about the blocks and the creasing devices andcooperating with the rollers on the blocks to force the creasing devicesinto cooperative relation with the shaping die.

10. A creasing machine comprising a bed having an opening through whichthe creased articles are discharged, a shaping die suspended above saidopening, radially movable creasing devices guided on the bed, and arotary cam ring surrounding said creasing devices and arranged to forcethe creasing devices inwardly into cooperation with the shaping die.

11. A creasing machine comprising a bed having an opening and guidesextending radially with reference to said opening, creasing devicesmovable on the guides, blocks movable on the guides and resilientlyconnected with the creasing devices, a spring moving the creasingdevices and blocks outwardly, a cam ring surrounding said blocks andarranged to move the latter with the creasing devices inwardly, and ashapin die with which said creasing devices are a apted to cooperatewhen moved inwardly.

12. A loop creasing machine comprising a shaping die having concavesides, concave ends and sharp corners between the ends and sides, theshaping die being constructed to permit a loop to surround the same, andcreasing devices arranged to cooperate with the sides and ends of theshaping die to force the loop into engagement with the concave faces tocrease the loops at the sharp edges.

LOWELL W. SHIELDS.

